Telephone



(MddeL) V 4 G. E. BUELL.

I Telephones. No. 232,676. Patented Sept. 28,1880.

b H a i NAPETERS. PHOTmuTHOGRAPnER, wlsmuurou. n c.

UNITED STATES PATENT. @rrrcn.

CHARLES E. BUELL, OF NEW HAVEN, CONNECTICUT.

TELEPHONE.

SPECIFICATION forming part of Letters Patent No. 232,676, dated September 28, 1880,

' Application filed Angust7, 1880. (ModeL) To all whom it may concern:

Be it known that 1, CHARLES E. BUELL, of New Haven, in the county of New Haven and State of Connecticut, have invented a new 1mprovernent in Telephones; and I do hereby declare the following, when taken in connec tion with the accompanying drawings and the letters of reference marked thereon, to be aifull, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure l, a sectional view; Fig. 2, a plan view of the interior; Figs. 3 and 4, modificat-ions.

My invention relates to telephones which are especially adapted to the reproduction at a distance of sonorous waves or vibrationsby means of electrical impulses traversing a con ducting-circuit; and it consists in the employment of iron or steel armatures, in the form and arranged in the manner to be hereinafter described, in place of the disks and plates heretofore used.

The object of my invention is to so construct and arrange the induction-armatures as to make them responsive to variations in the magnetic condition of the inducing-magnet of' the most delicate character, to increase the amplitude of vibrations, and to multiply the number of vibrating armatures in one telephone'case.

The telephone T is of the form ordinarily used for receiving. Several armatures, c e, are firmly held in position by the mouth-piece of the telephone screwed down upon one of their outer ends or edges, the edge or end of each free to vibrate above the protruding end of the magnet N.

As represented in Fig. 2, there are three armatures, each in the form ofa sector, their point or apex as near each other as conveniently can be without possibility of contact with each other, but arranged so that at the center they are all in the same plane. These armatures may be increased in number to a very great extent-as, for instance, short fine wires may be arranged radially, their outer ends secured and inner ends left free and independent of each other at the center, and all in the same plane.

Armaturcs in the form of a sector, or bearing tion as a disk, and are preferred to round or rectangular armatures. They can be attached to a ring of paper or metal for convenience of handling.

In Fig. 3 the armatures e c are arranged with their outer edge resting upon the ends 8 s of the multipolar magnet, which constitutes the core of the telephone-coil C. f is a wooden block for holding the multipolar magnet.

In Fig. 4 the sectors 6 e are attached to or in contact with the covers A and A of the coils C C and their inner edge or end free to vibrate above a magnet, B, opposite in its polarity to the presented armatures.

The magnet B can be an electro-magnet and serve the double use of attracting the armatures e e and as the core of an induction-coil nating over the same pole of the inducingmagnet in inductive proximity thereto and radiating therefrom, as described.

2. In an electrical telephone, an iron or steel armature in the form of a sector, substantially as described.

3. In an electrical telephone, an armature of iron or steel bearing a sector of a non-magnetic or diamagnetic material, as set forth.

4. The combination, in an electrical telephone, of one or more sector-shaped armatures of iron or steel, one edge thereof in contact with the outer limb of a U-shaped magnet and the other extreme edge thereof free to vibrate above the opposite pole of said. magnet, as set forth.

5. The combination, in an electrical telephone, of a multipolar magnet with iron or 6. The combination, in' the same electric herein described I hereunto sign my name telephone, of two or more inducing-magnets, this 10th day of July, 1880. each having an iron or steel armature in con- 1 tact therewith, with the other edge of each CHARLES BUELL' 5 such armature free to vibrate above one and. Witnesses:

the same constantly magnetic pole, as set forth. J. H. SHUMWAY, In witness to my claims to the invention JOHN E. EARLE. 

